Overweight adult educates mocking teens in超市的场景翻译成了中文，我将重新用英文简洁准确地总结核心事件： An overweight adult confronts mocking teens in a supermarket, explaining obesity is a disease, not a choice.

An overweight adult confronted mocking teenagers in a supermarket by sharing that obesity is a disease, not a choice, leaving the teens stunned. This highlights the misunderstanding of obesity as a chronic complex disease affecting 890 million adults globally, according to the World Health Organization. Dr. Ania Jastreboff from Yale stresses the need for proper treatment of obesity, viewing it like any other chronic disease.